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            <td width="10%" class="headerItem">Current view:</td>
            <td width="35%" class="headerValue"><a href="../../../index.html">top level</a> - <a href="index.html">include/caffe/util</a> - db_lmdb.hpp<span style="font-size: 80%;"> (source / <a href="db_lmdb.hpp.func-sort-c.html">functions</a>)</span></td>
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            <td width="10%" class="headerCovTableHead">Hit</td>
            <td width="10%" class="headerCovTableHead">Total</td>
            <td width="15%" class="headerCovTableHead">Coverage</td>
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            <td class="headerItem">Test:</td>
            <td class="headerValue">code analysis</td>
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            <td class="headerItem">Lines:</td>
            <td class="headerCovTableEntry">24</td>
            <td class="headerCovTableEntry">28</td>
            <td class="headerCovTableEntryMed">85.7 %</td>
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            <td class="headerItem">Date:</td>
            <td class="headerValue">2020-09-11 22:25:26</td>
            <td></td>
            <td class="headerItem">Functions:</td>
            <td class="headerCovTableEntry">8</td>
            <td class="headerCovTableEntry">12</td>
            <td class="headerCovTableEntryLo">66.7 %</td>
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            <td class="headerItem">Legend:</td>
            <td class="headerValueLeg">            Lines:
            <span class="coverLegendCov">hit</span>
            <span class="coverLegendNoCov">not hit</span>
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<pre class="sourceHeading">          Line data    Source code</pre>
<pre class="source">
<a name="1"><span class="lineNum">       1 </span>            : #ifdef USE_LMDB</a>
<span class="lineNum">       2 </span>            : #ifndef CAFFE_UTIL_DB_LMDB_HPP
<span class="lineNum">       3 </span>            : #define CAFFE_UTIL_DB_LMDB_HPP
<span class="lineNum">       4 </span>            : 
<span class="lineNum">       5 </span>            : #include &lt;string&gt;
<span class="lineNum">       6 </span>            : #include &lt;vector&gt;
<span class="lineNum">       7 </span>            : 
<span class="lineNum">       8 </span>            : #include &quot;lmdb.h&quot;
<span class="lineNum">       9 </span>            : 
<span class="lineNum">      10 </span>            : #include &quot;caffe/util/db.hpp&quot;
<span class="lineNum">      11 </span>            : 
<span class="lineNum">      12 </span>            : namespace caffe { namespace db {
<span class="lineNum">      13 </span>            : 
<span class="lineNum">      14 </span>            : inline void MDB_CHECK(int mdb_status) {
<span class="lineNum">      15 </span>            :  // CHECK_EQ(mdb_status, MDB_SUCCESS) &lt;&lt; mdb_strerror(mdb_status);
<span class="lineNum">      16 </span>            : }
<span class="lineNum">      17 </span>            : 
<span class="lineNum">      18 </span>            : class LMDBCursor : public Cursor {
<span class="lineNum">      19 </span>            :  public:
<span class="lineNum">      20 </span>            :   explicit LMDBCursor(MDB_txn* mdb_txn, MDB_cursor* mdb_cursor)
<span class="lineNum">      21 </span><span class="lineCov">          1 :     : mdb_txn_(mdb_txn), mdb_cursor_(mdb_cursor), valid_(false) {</span>
<a name="22"><span class="lineNum">      22 </span><span class="lineCov">          1 :     SeekToFirst();</span></a>
<span class="lineNum">      23 </span>            :   }
<span class="lineNum">      24 </span><span class="lineCov">          3 :   virtual ~LMDBCursor() {</span>
<span class="lineNum">      25 </span><span class="lineCov">          1 :     mdb_cursor_close(mdb_cursor_);</span>
<a name="26"><span class="lineNum">      26 </span><span class="lineCov">          1 :     mdb_txn_abort(mdb_txn_);</span></a>
<a name="27"><span class="lineNum">      27 </span><span class="lineCov">          2 :   }</span></a>
<a name="28"><span class="lineNum">      28 </span><span class="lineCov">         12 :   virtual void SeekToFirst() { Seek(MDB_FIRST); }</span></a>
<span class="lineNum">      29 </span><span class="lineCov">      20600 :   virtual void Next() { Seek(MDB_NEXT); }</span>
<span class="lineNum">      30 </span><span class="lineNoCov">          0 :   virtual string key() {</span>
<a name="31"><span class="lineNum">      31 </span><span class="lineNoCov">          0 :     return string(static_cast&lt;const char*&gt;(mdb_key_.mv_data), mdb_key_.mv_size);</span></a>
<span class="lineNum">      32 </span>            :   }
<span class="lineNum">      33 </span><span class="lineCov">      10301 :   virtual string value() {</span>
<span class="lineNum">      34 </span><span class="lineCov">      10301 :     return string(static_cast&lt;const char*&gt;(mdb_value_.mv_data),</span>
<a name="35"><span class="lineNum">      35 </span><span class="lineCov">      20602 :         mdb_value_.mv_size);</span></a>
<span class="lineNum">      36 </span>            :   }
<span class="lineNum">      37 </span><span class="lineCov">      10300 :   virtual bool valid() { return valid_; }</span>
<span class="lineNum">      38 </span>            : 
<span class="lineNum">      39 </span>            :  private:
<span class="lineNum">      40 </span>            :   void Seek(MDB_cursor_op op) {
<span class="lineNum">      41 </span><span class="lineCov">      10306 :     int mdb_status = mdb_cursor_get(mdb_cursor_, &amp;mdb_key_, &amp;mdb_value_, op);</span>
<span class="lineNum">      42 </span><span class="lineCov">      10306 :     if (mdb_status == MDB_NOTFOUND) {</span>
<span class="lineNum">      43 </span><span class="lineCov">          5 :       valid_ = false;</span>
<span class="lineNum">      44 </span>            :     } else {
<span class="lineNum">      45 </span>            :       MDB_CHECK(mdb_status);
<span class="lineNum">      46 </span><span class="lineCov">      10301 :       valid_ = true;</span>
<span class="lineNum">      47 </span>            :     }
<span class="lineNum">      48 </span>            :   }
<span class="lineNum">      49 </span>            : 
<span class="lineNum">      50 </span>            :   MDB_txn* mdb_txn_;
<span class="lineNum">      51 </span>            :   MDB_cursor* mdb_cursor_;
<span class="lineNum">      52 </span>            :   MDB_val mdb_key_, mdb_value_;
<span class="lineNum">      53 </span>            :   bool valid_;
<a name="54"><span class="lineNum">      54 </span>            : };</a>
<span class="lineNum">      55 </span>            : 
<span class="lineNum">      56 </span><span class="lineNoCov">          0 : class LMDBTransaction : public Transaction {</span>
<span class="lineNum">      57 </span>            :  public:
<span class="lineNum">      58 </span>            :   explicit LMDBTransaction(MDB_env* mdb_env)
<span class="lineNum">      59 </span><span class="lineNoCov">          0 :     : mdb_env_(mdb_env) { }</span>
<span class="lineNum">      60 </span>            :   virtual void Put(const string&amp; key, const string&amp; value);
<span class="lineNum">      61 </span>            :   virtual void Commit();
<span class="lineNum">      62 </span>            : 
<span class="lineNum">      63 </span>            :  private:
<span class="lineNum">      64 </span>            :   MDB_env* mdb_env_;
<span class="lineNum">      65 </span>            :   vector&lt;string&gt; keys, values;
<span class="lineNum">      66 </span>            : 
<span class="lineNum">      67 </span>            :   void DoubleMapSize();
<span class="lineNum">      68 </span>            : 
<span class="lineNum">      69 </span>            :   DISABLE_COPY_AND_ASSIGN(LMDBTransaction);
<span class="lineNum">      70 </span>            : };
<span class="lineNum">      71 </span>            : 
<span class="lineNum">      72 </span>            : class LMDB : public DB {
<a name="73"><span class="lineNum">      73 </span>            :  public:</a>
<span class="lineNum">      74 </span><span class="lineCov">          1 :   LMDB() : mdb_env_(NULL) { }</span>
<a name="75"><span class="lineNum">      75 </span><span class="lineCov">          2 :   virtual ~LMDB() { Close(); }</span></a>
<span class="lineNum">      76 </span>            :   virtual void Open(const string&amp; source, Mode mode);
<span class="lineNum">      77 </span><span class="lineCov">          1 :   virtual void Close() {</span>
<span class="lineNum">      78 </span><span class="lineCov">          1 :     if (mdb_env_ != NULL) {</span>
<span class="lineNum">      79 </span><span class="lineCov">          1 :       mdb_dbi_close(mdb_env_, mdb_dbi_);</span>
<span class="lineNum">      80 </span><span class="lineCov">          1 :       mdb_env_close(mdb_env_);</span>
<span class="lineNum">      81 </span><span class="lineCov">          1 :       mdb_env_ = NULL;</span>
<span class="lineNum">      82 </span>            :     }
<span class="lineNum">      83 </span><span class="lineCov">          1 :   }</span>
<span class="lineNum">      84 </span>            :   virtual LMDBCursor* NewCursor();
<span class="lineNum">      85 </span>            :   virtual LMDBTransaction* NewTransaction();
<span class="lineNum">      86 </span>            : 
<span class="lineNum">      87 </span>            :  private:
<span class="lineNum">      88 </span>            :   MDB_env* mdb_env_;
<span class="lineNum">      89 </span>            :   MDB_dbi mdb_dbi_;
<span class="lineNum">      90 </span>            : };
<span class="lineNum">      91 </span>            : 
<span class="lineNum">      92 </span>            : }  // namespace db
<span class="lineNum">      93 </span>            : }  // namespace caffe
<span class="lineNum">      94 </span>            : 
<span class="lineNum">      95 </span>            : #endif  // CAFFE_UTIL_DB_LMDB_HPP
<span class="lineNum">      96 </span>            : #endif  // USE_LMDB
</pre>
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